gecko-dev/gfx2/public/nsITransferable.idl

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corp. Portions created by Netscape are Copyright (C) 1999 Netscape
* Communications Corp. All Rights Reserved.
*
* Contributor(s):
* Mike Pinkerton
*/
#include "nsISupports.idl"
#include "nsIFormatConverter.idl"
// these probably shouldn't live here, but in some central repository shared
// by the entire app.
/*! @verbatim */
%{C++
#define kTextMime "text/plain"
#define kUnicodeMime "text/unicode"
#define kHTMLMime "text/html"
#define kAOLMailMime "AOLMAIL"
#define kPNGImageMime "image/png"
#define kJPEGImageMime "image/jpg"
#define kGIFImageMime "image/gif"
#define kFileMime "application/x-moz-file"
#define kURLMime "text/x-moz-url"
%}
/*! @endverbatim */
/**
* nsITransferable interface
*
* @author Mike Pinkerton <pinkerton@netscape.com>
* @version 1.1
* @see "gfx2"
*/
[scriptable, uuid(d0420dd2-1dd1-11b2-87cd-894b24affa87)]
interface nsITransferable : nsISupports
{
/**
* Computes a list of flavors that the transferable can export, either through intrinsic
* knowledge or output data converters.
*
* @param aFlavors An array of strings that contains the supported flavors.
* @param nFlavors The number of strings in the \a aFlavors array.
* @note This is a copy of the internal list, so it may be edited w/out affecting the transferable.
*/
void flavorsTransferableCanExport([array, size_is(nFlavors)] out string aFlavors,
out unsigned long nFlavors);
/**
* Given a flavor retrieve the data.
*
* @param aFlavor The flavor of data to retrieve
* @param aData The data. Some variant of class in nsISupportsPrimitives.idl
* @param aDataLen The length of the data
*/
void getTransferData(in string aFlavor, out nsISupports aData, out unsigned long aDataLen);
/**
* Returns the best flavor in the transferable, given those that have
* been added to it with addFlavor()
*
* @param aFlavor The flavor of data that was retrieved
* @param aData The data. Some variant of class in nsISupportsPrimitives.idl
* @param aDataLen The length of the data
*/
void getAnyTransferData(out string aFlavor, out nsISupports aData, out unsigned long aDataLen);
/**
* Is the data larger than XXXXXX bytes?
* @attention define "large"
* @return TRUE if the data is large.
*/
boolean isLargeDataSet();
///////////////////////////////
// Setter part of interface
///////////////////////////////
/**
* Computes a list of flavors (mime types) that the transferable can
* accept into it, either through intrinsic knowledge or input data converters.
*
* @param aFlavors An array of strings that contains the supported flavors.
* @param nFlavors The number of strings in the \a aFlavors array.
* @note This is a copy of the internal list, so it may be edited w/out affecting the transferable.
*/
void flavorsTransferableCanImport([array, size_is(nFlavors)] out string aFlavors,
out unsigned long nFlavors);
/**
* Sets the data in the transferable with the specified flavor. The transferable
* will maintain its own copy the data, so it is not necessary to do that beforehand.
*
* @param aFlavor the flavor of data that is being set
* @param aData the data, some variant of class in nsISupportsPrimitives.idl
* @param aDataLen the length of the data
*/
void setTransferData(in string aFlavor, in nsISupports aData, in unsigned long aDataLen);
/**
* Add the data flavor, indicating that this transferable
* can receive this type of flavor
*
* @param aDataFlavor a new data flavor to handle
*/
void addDataFlavor(in string aDataFlavor);
/**
* Removes the data flavor matching the given one (string compare) and the data
* that goes along with it.
*
* @param aDataFlavor a data flavor to remove
*/
void removeDataFlavor(in string aDataFlavor);
attribute nsIFormatConverter converter;
};